cc1101 运行一段时间后，GDO0触发不了接收中断

hea hea

Prodigy 60 points

Other Parts Discussed in Thread: CC1101

1、cc1101 运行一段时间后，GDO0触发不了接收中断，导致cc1101死机。当用导线触碰GDO0引脚后，接收恢复正常。

2、cc1101 运行一段时间后，通讯距离变短。

5 年多前

0 hea hea 5 年多前

Prodigy 60 points

mcu采取GDO0中断接收数据的方式，寄存器配置如下
const registerSetting_t preferredSettings_1200bps[]=
{
{IOCFG0, 0x06},
{PKTCTRL0, 0x05},
{FSCTRL1, 0x06},
{ADDR, 0x01},
{PKTCTRL1, 0x05},
{PKTLEN, 0x1f},
{FREQ2, 0x10},
{FREQ1, 0xaa},
{FREQ0, 0x1e},
{MDMCFG4, 0xf5},
{MDMCFG3, 0x83},
{MDMCFG2, 0x13},
{DEVIATN, 0x15},
{AGCCTRL2, 0x07},
{AGCCTRL1, 0x40},
{MCSM0, 0x18},
{FOCCFG, 0x16},
{WORCTRL, 0xFB},
{FSCAL3, 0xE9},
{FSCAL2, 0x2A},
{FSCAL1, 0x00},
{FSCAL0, 0x1F},
{TEST0, 0x09},
{PATABLE, 0xCB}
};

cc1101_gdo0_rx_it在gpio的中断处理中被调用
static void cc1101_gdo0_rx_it(void)
{
unsigned char rx_buf[MAX_FIFO_SIZE], rx_count;
int ret, i;

rx_count = MAX_FIFO_SIZE;

ret = cc1101_receive_packet(rx_buf, &rx_count);

cc1101_set_rx_mode();

if(ret == 0)
{
for(i = 0; i < rx_count; i++)
{
rf_dev.rx_buf[rf_dev.rx_wr++] = rx_buf[i];
rf_dev.rx_wr %= RX_BUF_SIZE;

/*
overflow handle
*/
if(rf_dev.rx_wr == rf_dev.rx_rd)
{
rf_dev.rx_rd++;
rf_dev.rx_rd %= RX_BUF_SIZE;
}
}
cc1101_crash_cnt=0;
rt_kprintf("cc1101 receive data<%d>:",rx_count);
//cc1101_hex_printf(rx_buf, rx_count);
rt_kprintf("\r\n");
rt_sem_release(&(cc1101_rx_sem));
}
}
static int cc1101_receive_packet(unsigned char *buf, unsigned char *count)
{
int i;
rt_uint8_t tmp[128];
unsigned char packet_len, status[2];
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_SINGLE_ACCESS, RXBYTES, &packet_len, 1);
rt_kprintf("packet len1 is %x\r\n",packet_len);
if((packet_len & 0x7f) == 0)
{
if (packet_len & 0x80)
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_BURST_ACCESS, RXFIFO, tmp, 128);
return -1;
}

//packet_len = cc1101_read_signle_reg(RF_RXFIFO);
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_SINGLE_ACCESS, RXFIFO, &packet_len, 1);
rt_kprintf("packet len2 is %d %d\r\n",packet_len, *count);
if(packet_len <= *count)
{
//cc1101_read_burst_reg(RF_RXFIFO, buf, packet_len);
//cc1101_read_burst_reg(RF_RXFIFO, status, 2);
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_BURST_ACCESS, RXFIFO, buf, packet_len);
*count = packet_len;
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_BURST_ACCESS, RXFIFO, status, 2);
//rt_kprintf("status %x %x \r\n",status[0],status[1]);
//trx8BitRegAccess(RADIO_READ_ACCESS | RADIO_BURST_ACCESS, RSSI, &status[0], 1);
//trx8BitRegAccess(RADIO_READ_ACCESS | RADIO_BURST_ACCESS, LQI, &status[1], 1);
rt_kprintf("status %x %x \r\n",status[0],status[1]);
//*count = packet_len;
r_signal = status[0];
return ((status[1] & 0x80) ? 0 : -2);
}
else
{
trx8BitRegAccess(RADIO_READ_ACCESS|RADIO_BURST_ACCESS, RXFIFO, tmp, 128);
cc1101_set_rx_mode();
return -3;
}

}
static void cc1101_set_rx_mode(void)
{

trxSpiCmdStrobe(RF_SFRX);
trxSpiCmdStrobe(RF_SIDLE);
trxSpiCmdStrobe(RF_SRX);

rf_dev.mode = MODE_RX;
}